What is the output of the following code?

Java

C#

import java.util.ArrayList;

class Main $\{$

public static void main$($String$[]$ args$)\{$

ArrayList myNumbers $=$ new ArrayList$()$;

myNumbers.add$(10)$;

myNumbers.add$(20)$;

myNumbers.add$(30)$;

myNumbers.add$(40)$;

System.out.println$($myNumbers$.$get$($myNumbers$.$size$()-1))$;

$\}$

$\}$